Информация для 3.5-1314

Fix a bug where FIFO recording could not work.
Example (in step by step explanation):
1. Run Dolphin.
2. Go to Tools -> Fifo Player
3. Go to the Record tab and hit record and then stop without a game loaded.
The button is now disabled and will not become active again for the whole time that Dolphin is running. Dolphin must be closed and then re-opened in order to use it again. This fixes that.
I've tested it with multiple conditions to make sure this doesn't beef anything else related to the Fifo Player.
ie)
- Record then Stop without a game loaded (multiple times)
- Record then Stop with a game loaded (multiple times, as well as testing playback. All of which work fine).